Home / 279,372,840.61-385,546,413.82-155,613,572.41

Finding the Fourth Proportional to 279,372,840.61, 385,546,413.82 and 155,613,572.41

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Solution

The fourth proportional to 279,372,840.61, 385,546,413.82 and 155,613,572.41 is: 214,753,354.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,372,840.61 : 385,546,413.82 = 155,613,572.41 : x
  2. Step 2: Convert to fraction form
    279,372,840.61/385,546,413.82 = 155,613,572.41/x
  3. Step 3: Cross multiply
    279,372,840.61x = 385,546,413.82 × 155,613,572.41
  4. Step 4: Simplify right side
    279,372,840.61x = 59,996,254,783,041,496
  5. Step 5: Solve for x
    x = 59,996,254,783,041,496/279,372,840.61
  6. Step 6: Final answer
    x = 214,753,354.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.